Improvement in mortising-machines



Pafented May 6,]

E. H A M M G N D Mortising-Machines.

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UNITED STATES EUGENE HAMMOND, or CUMBERLAND, MAEYLAN] IMPROVEMENT INMORTISlNG-MACHINES.

Specification forming part of Letters Patent No.

February 14, 1873.

To all whom it may concern:

Be it known that I, EUGENE HAMMOND, of Cumberland, in the county ofAlleghany and State of Maryland, have invented a new and usefulImprovement in Mortising-Machines; and I do hereby declare the followingto be a full and exact description of the same, reference being had tothe accompanying drawing forming a part of this specification, in whichFigure 1 is a front elevation. Fig. 2 is a vertical cross-section. Fig.3 is a top view of the slide.

Theinvention consists in the improvement of mortising-machines, ashereinafter described and pointed out in the claims.

In the drawing, A represents the upright frame of a mortising-machine,in which is rotated the crank-shaft B, having thereon the crank-wheel 0,connected with the swiveled mortising-chisel D by a strap, (1. a a. arethe guides through which the chisel travels in its upward and downwardmovements. E is a carriage having an upright piece, through which passesa clamp-screw to hold the work in its place; also having the usual rack,which is moved by a pinion, f, on the shaft F, to feed the stuff to thechisel or to enable it to be adjusted into the exact position required.

These matters being old and well known to the public, I do not desire tomake any claim upon them.

In the back-board of the carriage E is a long recess or groove, 0, inwhich are placed the spring spacing-gages G G, which are slotted andprovided with a set-screw, g, to enable them to be brought furtherforward or backward. The relative distance of these gages from eachother regulates the distance between the mortises.

One mortise being made while the end of the post abuts against theright-hand gage G,

the latter is pushed into the recess 0 and the post slides along untilits end strikes the second gage, G, when another mortise is made, and sofor any number, the gages, of course, corresponding to the number ofmortises desired.

If it is desired to mortise posts of any kind that have round, tapered,or beveled ends, then I use the hinged gages G G, which are PATENT O4FICE.

138,649, dated May 6, 1873; app

right-hand gage, which is th I raised and receives the post, which is md back against it; or the reverse may takplace, the post being broughtfirst against the right-hand gage, and after the mortise i finishedmoved back a little to allow this g go to be closed down into the recess6, when he post is a ain moved forward to the other g H is atraveling-dog that, I as the pawl or pin it fastening in the holes 6, ofcarriage, and the rear subjacent spring h; that holds the pawl locked insaid holes. is a dovetailed tongue on the under side of 0g, which slidesin the corresponding ways 0 1 he frame A.

By this device I proposel 0 out different sized mortises in the same sff without tak ing it out of or stopping t: machine, thus obviating thenecessity of h ndling the stuff twice, and consequent loss 0 time.

I is an adjustable gage, w ch is slotted in its shank i, and provided wiI a set-screw, i, that screws into the upper g-e of the backboard, whileJ is a stopper, ich may be ad justed forward or back or ve ically bymeans of the slot j and screw j By combining the dog H n d gage I withthe carriage and the stop-b J with the up right frame of a mortising-mlchine I can reg ulate the length of mortisesl ith great facility andaccuracy. 3 The gage I is brought ag inst one side of the stop-bar J,when the chi l commences to operate, and the carriage ca iesitrtherefrom and brings up thereto the j g H, which has been previouslyset at the quired distance from gage. As soon as the sired length hasbeen excised the dog H stri s the stop-bar J and the feed stops. 1 l

The chisel is reciprocated 0 do the cutting and rotated to reverse or cnge its relative position in the usual maune Having thus describednvention, what I claim as new, and desire to secure by Letters Patent,is-

1. The combination, with a mortising-chisel and side-recessedpost-carriage, of the gages G G or G G, the traveling-dog H, gage I, andstop-bar J, applied as and for the purpose described. I

2. The spring-pressed dog H h sliding in the perforated way e, the gageI, and the stopbar J, combined with the carriage of a mortising-machine,as herein shown, and for the purpose specified.

EUGENE HAMMOND.

Witnesses N. S. HALL, F. 0. Emma.

